问题如下：
Which of the following statements regarding the execution algorithms is incorrect?
选项：
A.POV algorithm trades a predetermined number of shares within the specified time interval.
VWAP algorithms slice the order into smaller amounts to send to the market following a time slicing schedule based on historical intraday volume profiles.
TWAP algorithms slice the order into smaller amounts to send to the market following an equal-weighted time schedule.
解释：
A is correct. VWAP and TWAP algorithms follow a time-specified schedule, trading a predetermined number of shares within the specified time interval, rather than the POV algorithm. The other two statements are both correct.
A选项：POV algorithm trades a predetermined number of shares within the specified time interval.
有两个问题：
1、如果把number改成percentage是否正确？POV应该是确定的比例而不是股数吧；
2、讲义40页最后一句话，They may not complete the order within the time period specified,是否也是说会有一个时间段的概念呢？
